Hi Neil!
Roger stated that he is pretty sure that when he deletes a volume on physical 
tape, the volume becomes pending. In my case it's turning into scratch 
immediately and thus being relabeled immediately. I don't understand why it 
should work differently...
Kind regards,
Eric van Loon
Air France/KLM Storage Engineering


-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of 
Schofield, Neil (Storage & Middleware, Backup & Restore)
Sent: vrijdag 24 maart 2017 13:53
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: delete volume

Classification: Public

Eric

My experience of DELETE VOLUME going back to ADSM 3.1 is that it will 
immediately make the library volume (physical or virtual) scratch with no 
pending reuse delay.

By typing the words DISCARDDATA=YES, I guess you are explicitly consenting to 
never being able to access the data again. You might have a way back if by 
chance a physical tape hasn't been re-used by the time you realise your 
mistake, but with virtual tape the data erasure is immediate when the volume is 
relabelled.

I suppose my advice would be to only use DISCARDDATA=YES in the event that all 
remaining data on the volume has already proven (through MOVE DATA operations, 
or whatever) to be unreadable, and you don't have the option to recover it from 
a copy pool. In this case, a pending reuse delay wouldn't help make the data 
any more readable. I realise this doesn't address your concerns around 
accidental deletion of a volume, but I believe there's a saying about great 
responsibility accompanying great power.

Regards
Neil Schofield
IBM Spectrum Protect SME
Backup & Recovery | Storage & Middleware | Central Infrastructure Services | 
Infrastructure & Service Delivery | Group IT LLOYDS BANKING GROUP 
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